Method for testing radio frequency (rf) receiver to provide power correction data

Abstract

A method for testing a radio frequency (RF) receiver as a device under test (DUT) with one or more test instruments to provide a plurality of relative power correction factors, a plurality of received signal strength indication (RSSI) calibration factors, or both.

1 . A method for testing a radio frequency (RF) receiver as a device under test (DUT) with one or more test instruments to provide a plurality of relative power correction factors, comprising:
 transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies;   receiving said broadband signal with said DUT;   selecting respective ones of said plurality of sub-carrier signals;   measuring a power level for each of said selected respective ones of said plurality of sub-carrier signals to provide a corresponding one of a plurality of power level measurements;   comparing each of said plurality of power level measurements with a corresponding one of said one or more predetermined power levels to provide a corresponding one of said plurality of relative power correction factors; and   storing said plurality of relative power correction factors for use by said DUT.   
   
   
       2 . The method of  claim 1 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting a broadband signal containing a plurality of sub-carrier signals having substantially mutually equal power levels. 
   
   
       3 . The method of  claim 1 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting a broadband signal containing a plurality of sub-carrier signals mutually adjacent ones of which have mutually unequal power levels. 
   
   
       4 . The method of  claim 1 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting a broadband signal containing a plurality of sub-carrier signals mutually adjacent portions of which have respective pluralities of mutually unequal power levels. 
   
   
       5 . The method of  claim 1 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting a broadband signal containing a plurality of sub-carrier signals with mutually adjacent portions each of which includes a sub-plurality of sub-carrier signals having a maximum power level, a minimum power level, and one or more power levels intermediate and between said maximum and minimum power levels. 
   
   
       6 . The method of  claim 1 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals mutually adjacent ones of which are separated by substantially equal frequency differences. 
   
   
       7 . A method for testing a radio frequency (RF) receiver as a device under test (DUT) with one or more test instruments to provide a plurality of received signal strength indication (RSSI) calibration factors, comprising:
 transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of a plurality of predetermined power levels and is centered about a respective one of a plurality of frequencies;   receiving said broadband signal with said DUT;   selecting respective ones of said plurality of sub-carrier signals;   measuring a power level for each of said selected respective ones of said plurality of sub-carrier signals to provide a corresponding one of a plurality of power level measurements;   comparing each of said plurality of power level measurements with a corresponding one of said plurality of predetermined power levels to provide a corresponding one of said plurality of RSSI calibration factors; and   storing said plurality of RSSI calibration factors for use by said DUT.   
   
   
       8 . The method of  claim 7 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting a broadband signal containing a plurality of sub-carrier signals mutually adjacent ones of which have mutually unequal power levels. 
   
   
       9 . The method of  claim 7 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting a broadband signal containing a plurality of sub-carrier signals mutually adjacent portions of which have respective pluralities of mutually unequal power levels. 
   
   
       10 . The method of  claim 7 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting a broadband signal containing a plurality of sub-carrier signals with mutually adjacent portions each of which includes a sub-plurality of sub-carrier signals having a maximum power level, a minimum power level, and one or more power levels intermediate and between said maximum and minimum power levels. 
   
   
       11 . The method of  claim 7 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals mutually adjacent ones of which are separated by substantially equal frequency differences. 
   
   
       12 . A method for testing a radio frequency (RF) receiver as a device under test (DUT) with one or more test instruments to provide a plurality of relative power correction factors and a plurality of received signal strength indication (RSSI) calibration factors, comprising:
 transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of a plurality of predetermined power levels and is centered about a respective one of a plurality of frequencies;   receiving said broadband signal with said DUT;   selecting respective ones of said plurality of sub-carrier signals;   measuring a power level for each of said selected respective ones of said plurality of sub-carrier signals to provide a corresponding one of a plurality of power level measurements;   comparing each of said plurality of power level measurements with a corresponding one of said one or more predetermined power levels to provide a corresponding one of said plurality of relative power correction factors and a corresponding one of said plurality of RSSI calibration factors; and   storing said pluralities of relative power correction factors and RSSI calibration factors for use by said DUT.   
   
   
       13 . The method of  claim 12 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting a broadband signal containing first and second sub-pluralities of sub-carrier signals, wherein each of said first sub-plurality of sub-carrier signals has a respective power level substantially equal to a first power level, each of said second sub-plurality of sub-carrier signals has a respective power level substantially equal to a second power level, and said first and second power levels are unequal. 
   
   
       14 . The method of  claim 12 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting a broadband signal containing a plurality of sub-carrier signals mutually adjacent ones of which have mutually unequal power levels. 
   
   
       15 . The method of  claim 12 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting a broadband signal containing a plurality of sub-carrier signals mutually adjacent portions of which have respective pluralities of mutually unequal power levels. 
   
   
       16 . The method of  claim 12 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting a broadband signal containing a plurality of sub-carrier signals with mutually adjacent portions each of which includes a sub-plurality of sub-carrier signals having a maximum power level, a minimum power level, and one or more power levels intermediate and between said maximum and minimum power levels. 
   
   
       17 . The method of  claim 12 , wherein said transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals each of which has a respective one of one or more predetermined power levels and is centered about a respective one of a plurality of frequencies comprises transmitting, with said one or more test instruments, a broadband signal containing a plurality of sub-carrier signals mutually adjacent ones of which are separated by substantially equal frequency differences.